HP-R4252 Plasma tv has a vertical black line on left side of screen after 1/2 hour picture also becomes pixelated
I have changed the X and Y buffer boards. Got a beautiful picture but after 1/2 hour of the TV being on the image becomes pixelated. I was told the power supply board required changing. I changed the power supply board and now I have a 4.5" vertical solid black line on the left side of the screen and the problem with pixelation was not fixed either. The image becomes pixelated after about 1/2 hour or when the TV gets hot.